The Phase Angle Voltmeter (PAV), sometimes called a Phase Sensitive Voltmeter, has been a key instrument for the measurement of complex AC component parameters. Typical measurements include Phase Angle, In-Phase, Quadrature (90° component), Fundamental and Total RMS. Until recently, there have been limited choices in the marketplace for an accurate, high performance alternative. The advent of the GP102 PAV not only satisfies this need but provides many enhancements and additional functions not previously available.

Typical applications for a PAV include Synchro/Resolver test, LVDT/RVDT test, AC null measurement ratio, phase measurement, frequency selective amplifiers and magnetic component testing, inertial gyro drift tests, etc. The GP102 is able to display all these measurements simultaneously, on a bright multifunctional dot matrix display.

Some typical drawbacks of traditional PAVs are limited frequency response, absence of a built-in signal generator and high price. The GP102's built-in function generator allows the user to dispense with an external source, the wide frequency response allows true rms measurements from 10 mHz to 2 MHz. In addition to phase sensitive ratio tests the GP102 is able to plot gain/phase curves over a selected frequency range. For LVDT/RVDT measurements, the unit can display position directly in addition to standard phase sensitive ratio measurements. A high degree of harmonic, noise and common mode rejection makes it an ideal instrument for positional control PAV applications.

The GP102 is available in upright and 19" 2U rack formats, printer and RS232 interfaces are standard with an optional GPIB/IEEE-488 interface. Available software drivers and PC applications add to the instrument's versatility.